Sagittarius DSO'sPosted By Herbert Kraus |
My observing logs for non-Messier objects in Sagittarius contain these references:
I noted NGC 6520 (to which which someone else has also referred you) as a small but "fine" open cluster with several prominent stars among a swarm of unresolved members (viewed in an 8-inch SCT at 135x). Archinal & Hynes says it contains 60 stars within a diameter of 5 arcminutes.
NGC 6440 (also viewed at 135x) is a globular that I couldn't resolve (nor could a Webb Society observer using a 16½-inch scope at 222x), but which fascinated me because when I viewed it through a wider-angle eyepiece (83x) I saw it as the middle one in a string of five 10th magnitude objects.
I noted NGC 6520 (to which which someone else has also referred you) as a small but "fine" open cluster with several prominent stars among a swarm of unresolved members (viewed in an 8-inch SCT at 135x). Archinal & Hynes says it contains 60 stars within a diameter of 5 arcminutes.
NGC 6440 (also viewed at 135x) is a globular that I couldn't resolve (nor could a Webb Society observer using a 16½-inch scope at 222x), but which fascinated me because when I viewed it through a wider-angle eyepiece (83x) I saw it as the middle one in a string of five 10th magnitude objects.